石油学报 ›› 2010, Vol. 31 ›› Issue (3): 471-474.DOI: 10.7623/syxb201003022

• 油田开发 • 上一篇    下一篇

注采井网生产井含水率解析计算方法

许寒冰 1,2  李相方 3  石德佩 4  陈贵均 5  张  强 5   

  1. 1中国石油勘探开发研究院  北京  100083; 2中国石油采油采气重点实验室  北京  100083; 3中国石油大学石油工程教育部重点实验室  北京  102249; 4长城钻探公司解释中心  北京  100101; 5中国石油青海油田采油二厂  青海茫崖  817500
  • 收稿日期:2009-07-25 修回日期:2009-10-05 出版日期:2010-05-25 发布日期:2010-07-28
  • 通讯作者: 许寒冰
  • 作者简介:许寒冰,男,1980年3月生,2009年获中国石油大学(北京)油气田开发工程专业博士学位,现在中国石油勘探开发研究院采油所工作,主要从事堵水调剖等油气田开发方向研究。
  • 基金资助:

    国家科技重大专项(2008ZX05000-010-040)资助。

An analytical method for calculating water cut of producers in injection-production pattern

XU Hanbing 1,2  LI Xiangfang 3  SHI Depei 4  CHEN Guijun 5  ZHANG Qiang 5   

  • Received:2009-07-25 Revised:2009-10-05 Online:2010-05-25 Published:2010-07-28

摘要:

研究了一种对注采井网水驱前缘突破前后流线分布和生产井含水率的解析计算方法。利用过渡平面和多重施瓦茨柯里斯托弗变换建立注采井网单元的复势分布,据此描绘出不同时刻井网单元内流线分布。根据井网单元的流线分布特征来计算生产井含水率,得到注采井网水驱前缘突破后生产井含水率随时间和注水倍数变化曲线。含水率对流线条数敏感性分析结果显示,流线条数越少,含水率上升越快,并优选了流线条数方案。该解析方法可用于油藏工程中注采井网注采参数的解析计算。

关键词: 注采井网, 含水率, 流线分布, 注采参数, 解析计算方法

Abstract:

An analytical method was developed for calculating the streamline distribution and water cut of a producer in the injection-production pattern before and after the breaks of flooding front. The potential distribution of the injection-production pattern was obtained with the Schwarz-Christoffel transformation method. An upper half plane was introduced, and all streamlines within the well pattern were drawn. Based on the streamline distribution, the water cut curve of a producer in the well pattern changing with time and pore volume was obtained after the breakthrough of flooding front. The sensitivity analysis of water cut to streamline numbers showed that the less streamline numbers could result in the faster rising of water cut. The optimized streamline program was selected. The analytical method can be helpful for analytically calculating the parameters of production and injection in the injection-production pattern.

Key words: injection-production pattern, water cut, streamline distribution, production and injection parameters, analytical calculation method